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中国农学通报

中国农学通报 ›› 2015, Vol. 31 ›› Issue (33): 6-10.doi: 10.11924/j.issn.1000-6850.casb15030246

所属专题： 水稻

• 农学 农业基础科学 • 上一篇    下一篇

基于SPAD 值确定东北黑土区水稻最佳施氮量及追肥时间

林娜,张忠庆,李韶山,刘金华,赵立刚,王亚卿,向井,杨靖民   

  1. 吉林农业大学图书馆,吉林农业大学资源与环境学院,吉林市金穗肥业有限公司,吉林农业大学资源与环境学院,吉林农业大学图书馆,中农立华生物科技股份有限公司,柯尼卡美能达株式会社,吉林农业大学资源与环境学院
  • 收稿日期:2015-03-30 修回日期:2015-05-15 接受日期:2015-09-21 出版日期:2015-11-26 发布日期:2015-11-26
  • 通讯作者: 杨靖民
  • 基金资助:
    吉林省商品粮基地资源可持续利用重点实验室项目支持；企业资助项目“利用SPAD值进行作物营养氮素诊断及追肥量的确定”；吉林省科技厅项目“吉林省黑土肥力退化研究”(20100581)。

The Optimal Amount of Fertilizer and Additional Manuring Time of Rice in the Northeast Black Earth Area Based on SPAD

林娜,,李韶山,刘金华,赵立刚,王亚卿,向井 and 杨靖民   

  • Received:2015-03-30 Revised:2015-05-15 Accepted:2015-09-21 Online:2015-11-26 Published:2015-11-26

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摘要： 为确定东北黑土区水稻最佳施氮量及最佳追肥时间，采用田间试验的方式，使用SPAD-502，以“天”为单位，连续45 天测定不同处理（N1~N6；SPAD40、SPAD38、SPAD36、SPAD34 和SPAD32）下水稻叶片SPAD值的动态变化。研究结果表明：追施氮肥7 天时间内SPAD值明显上升，随施氮量的增加水稻叶片SPAD值明显升高且峰值较大，同时到达峰值时间越早；当施氮量为170 kg N/hm2时产量最高能达到7078 kg/hm2，SPAD值为40 时进行追肥产量最高，达到9078 kg/hm2。因此，在东北黑土区水稻最佳施氮量为170 kg N/hm2，当SPAD值为40时可用于确定分蘖期到孕穗期的最佳追肥时间。

关键词: 萎凋, 萎凋, 温度, 柔软性, 弹性, 塑性, CO2释放量, 色差

Abstract: The aims were to confirm the best amount of nitrogen application and the best additional manuring time of rice in black earth area of the Northeast. The field test was conducted with“day”as the unit, and the SPAD-502 was used to detect the dynamic change of the SPAD values of rice leaves under different treatments (N1-N6; PAD40, SPAD38, SPAD36, SPAD34 and SPAD32) for 45 consecutive days. The results showed that SPAD values increased significantly during the 7 days after the application of nitrogen additionally. As the amount of nitrogen application increased, the SPAD values of rice leaves increased significantly and the peak value was relatively high, meanwhile it reached the peak earlier. When the amount of nitrogen application was 170 kg N/hm2, the crop output was 7078 kg/hm2, and with the additional manuring carried out at SPAD value of 40, the crop output was up to 9078 kg/hm2, which was the highest. Therefore, the best amount of nitrogen application for rice in black earth area of the Northeast was 170 kg N/hm2, SPAD value of 40 could be used to determine the best time of additional manuring from tillering stage to booting stage.